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• 1551 Induunal Road <br /> Sequoia SanCadosCA94070 <br /> 1a) <br /> Analytical (650)( 232-9600 <br /> FAX{650)232-9612 <br /> www sequoialabs com <br /> Gettler-Ryan/Geostrategies(l) Project Unoca](4) <br /> 6747 Sierra Court,Suite J Project Number Former Unocal#2859, Stockton -Reported <br /> Dublin CA, 94568 Project Manager Deanna Harding 03/04/02 08 47 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-17(L202097-08)Water Sampled 02/15/02 14 45 Received 02/17/02 11 00 <br /> 1,2-Dibromoethane ND 40 ug/i 2 2020077 - 02/22/02 02/22/02 EPA 8260B <br /> 1,2-Dtchloroethane 280 40 <br /> Di-isopropyl ether ND 40 <br /> Ethyl tert-butyl ether ND 40 <br /> Methyl tert-butyl ether ND 40 <br /> Tert-amyl methyl ether ND 40 " " ^ •+ <br /> Tert-butyl alcohol ND 200 <br /> Surrogate 1,2-Dtchloroethane-d4 109% 70-130 " <br /> Surrogate Toluene-d8 101% 70-130 <br /> MW-18(L202097-09)Water Sampled 02/15/02 15 38 Received 02/17/02 11 00 <br /> I,2-Dibromoethane ND 20 ug/1 1 2020072 02/22/02 02/22/02 EPA 8260B rt <br /> 1,2-Dtchloroethane 73 20 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tert-butyl ether ND 20 <br /> Methyl tert-butyl ether ND 20 <br /> Tert-amyl methyl ether ND 2 0 <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dtchloroethane-d4 108% 70-130 <br /> Surrogate Toluene-d8 992% 70-130 ^ <br /> BMW-19(L202097-10)-Water=Sampled 02_/15/02-11 40=Received:42117/02-11 00- --- <br /> 1,2-Dibromoethane ND 2 0 uSA 1 2020072 02/22/02 02/22/02 EPA 8260B <br /> X1;2-Dichloioethane— — --ND 2 0-- I'--—" „----T++ ---—1. <br /> --- ---- <br /> Dt-isopropyl ether ND 20_ <br /> - -Ethyl tert-butyl ether ND 2 0 - <br /> Methyl tert-butyl ether ND 2 0 <br /> Tert-amyl methyl ether ND 2 0 <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dtchloroethane-d4 106% 70-130 <br /> Surrogate Toluene-d8 101 % 70-130 " <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 9 of 18 <br />